Publication
Zonotopic fault estimation filter design for discrete-time descriptor systems
Conference Article
Conference
IFAC World Congress (IFAC)
Edition
20th
Pages
5055-5060
Doc link
https://doi.org/10.1016/j.ifacol.2017.08.945
File
Abstract
This paper considers actuator-fault estimation for discrete-time descriptor systems with unknown but bounded system disturbance and measurement noise. A zonotopic fault estimation filter is designed based on the analysis of fault detectability indexes. To ensure estimation accuracy, the filter gain in the zonotopic fault estimation filter is optimized through the zonotope minimization. The designed zonotopic filter not only can estimate fault magnitudes, but it also provides fault estimation results in an interval, i.e. the upper and lower bounds of fault magnitudes. Moreover, the proposed fault estimation filter has a non-singular structure and hence is easy to implement. Finally, simulation results are provided to illustrate the effectiveness of the proposed method.
Categories
observability.
Scientific reference
Y. Wang, Z. Wang, V. Puig and G. Cembrano. Zonotopic fault estimation filter design for discrete-time descriptor systems, 20th IFAC World Congress, 2017, Toulouse, France, Vol 50 of IFAC Papers Online, pp. 5055-5060, Elsevier.
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